Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 240 · 40 questions

What you do (Bend and split): 1. Fill a clear glass with water and set it on a steady, sunny windowsill. 2. Put white paper on the floor where the sunlight passes through the glass. 3. Move the paper or glass slowly until a rainbow appears. 4. Never look straight at the Sun.

1. 1.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the time of day (b) the amount of water (c) the same glass (d) brightness of rainbow
2. 2.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
3. 3.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
4. 4.True or false: a mirror is needed for the water rainbow. (a) True (b) False
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) True (b) False
6. 6.🌈 In VIBGYOR, what number colour is blue?
7. 7.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so it gets hot (d) so the Sun moves
8. 8.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) never look at the Sun (d) look at it through glass
9. 9.🌈 How many colours do we name in a rainbow (VIBGYOR)?
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
11. 11.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) False (b) True
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) False (b) True
14. 14.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a balloon (d) yeast
15. 15.True or false: yeast is needed for the water rainbow. (a) True (b) False
16. 16.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
17. 17.True or false: a balloon is needed for the water rainbow. (a) False (b) True
18. 18.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) behind you (c) under the ground (d) straight above you
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the time of day (b) the amount of water (c) brightness of rainbow (d) the same window
20. 20.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
21. 21.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
22. 22.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
23. 23.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
24. 24.🌈 In VIBGYOR, what number colour is indigo?
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
27. 27.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
28. 28.🌈 In VIBGYOR, what number colour is green?
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) bright sunlight (d) a sunny window
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) True (b) False
33. 33.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
34. 34.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) tiny bits of dust (d) many colours mixed
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the same glass (c) the amount of water
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) bright sunlight (d) a sunny window
37. 37.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) turmeric powder (d) a magnet
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a battery cell (c) a sheet of white paper (d) a sunny window
40. 40.True or false: yeast is not needed for the water rainbow. (a) False (b) True

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